I suspect the answer is no, but maybe someone knows some magic.
I find VStudio to be easier to use to step through c# code. However, when I encounter a crash in the (non-CLR) layers below the CLR layers, I'd like to be able to use WinDbg. About the only thing I can think of is making a DMP file in VStudio and opening it in WinDbg. The dump creation doesn't give a lot of options, though, and I suspect that I'll miss some debug info.